Norcold Polar N7X - User Manual

© 2017 NORCOLD, INC. All rights reserved.
Part No. 639410 Rev. A 04.17.2018
Service Manual
Gas Electric Refrigerators
Questions? 1-800-444-7210
Improper installation, adjustment, altera-
tion, service or maintenance can cause
personal injury or property damage. Refer
to this manual. For assistance or addition-
al information, contact a qualied installer,
service agency, or the gas supplier.
Polar 7 Series (N7V, N7X, N7LX) Models
Polar 8 Series (N8V, N8X, N8LX) Models

Summary

SAFETY

REFRIGERATOR SPECIFICATIONS

PREVENTATIVE MAINTENANCE

Annual Maintenance Checks

Gas Flame Appearance Inspection

Clean Burner Tube Openings

USER INTERFACE (CONTROLS) - N7 V AND N8 V MODELS

Modes of Operation

Refrigerator Temperature Settings

FAULT CODES - N7 V AND N8 V MODELS

TROUBLESHOOTING FLOWCHARTS - N7 V AND N8 V MODELS

USER INTERFACE (CONTROLS) - N7 X AND N8 X MODELS

Gas and AC Operation Modes

FAULT CODES - N7 X AND N8 X MODELS

Fault Code Flash Patterns Overview

Explains fault code display via flash patterns for N7X/N8X models.

N7 X;N8 X Fault Code Flash Patterns

Lists various flash patterns and their corresponding fault meanings.

TROUBLESHOOTING FLOWCHARTS - N7 X AND N8 X MODELS

Solid Red Indicator Light Troubleshooting

Guides troubleshooting for a solid red light indicating no cooling.

Flash Pattern 1: AC Heater Fault

Troubleshoots AC heater faults via one red flash for N7X/N8X.

Flash Patterns 2-4: Control & Relay Faults

Troubleshoots control, limit, and AC relay faults for N7X/N8X.

Flash Patterns 5, 8-9: Valve & Voltage Faults

Troubleshoots valve and DC voltage issues for N7X/N8X.

Flash Pattern 10: Communication Loss

Troubleshoots communication loss for N7X/N8X via ten red flashes.

Thermistor Fault Troubleshooting

Guides thermistor fault diagnosis for N7X/N8X models.

USER INTERFACE (CONTROLS) - N7 LX AND N8 LX MODELS

Mode and Temperature Settings

Gas, AC, and DC Operation Modes

FAULT CODES - N7 LX AND N8 LX MODELS

N7 LX;N8 LX Fault Code Listing

Provides a list of fault codes and their meanings for N7LX/N8LX.

Fault Code - no FL with Audible Alarm

Troubleshoots burner ignition/re-ignition faults for N7LX/N8LX models.

TROUBLESHOOTING FLOWCHARTS - N7 LX AND N8 LX MODELS

Fault Code - no AC with Audible Alarm

Troubleshoots lack of AC power for N7LX/N8LX models.

Fault Code - AC HE with Audible Alarm

Troubleshoots AC heater faults for N7LX/N8LX models.

Fault Code - dc HE; rE with Audible Alarm

Troubleshoots DC heater and stuck DC relay faults for N7LX/N8LX models.

Fault Code - AC rE with Audible Alarm

Troubleshoots stuck AC heater relays for N7LX/N8LX models.

Fault Code - Lo dc Voltage Issues

Troubleshoots low DC voltage issues for N7LX/N8LX models.

Fault Code - HI dc Voltage Issues

Troubleshoots high DC voltage issues for N7LX/N8LX models.

Fault Code - no dt Communication Loss

Troubleshoots communication loss for N7LX/N8LX models.

Fault Code - Sr; oP LI; FL Faults

Fault Code - Flashing Temperature Setting

Troubleshoots flashing temperature settings due to thermistor issues.

Blank Display Troubleshooting

Diagnoses blank display issues for N7LX/N8LX models.

DIAGNOSTIC MODE - N7 LX AND N8 LX MODELS

Cooling System Diagnostic Flowchart

Guides troubleshooting of the refrigerator's cooling system performance.

WIRING SCHEMATIC

WIRING PICTORIAL

Norcold Polar N7X Specifications

General

Brand	Norcold
Model	Polar N7X
Category	Refrigerator
Language	English